bonnie



Jan. 31, 1956 BONNIE 2,732,736

OILER Filed Nov. 7, 1949 INVENTOR.

JOSEPH N. BONNIE 14 TTORNEY United States Patent 9 OILER Joseph M. Bonnie, Oakland, Calif.

Application November 7, 1949, Serial No. 126,019

9 Claims. (Cl. 222-123) The invention re ates to a hand-carried liquid applicator which is particularly adapted for use as an oiler.

A general object of the invention is to provide an oiler of the character described which is particularly efiicient for sealed pressure oiling in an oiling hole.

Another object is to provide an oiler of an all-flexible structure having its spout arranged for application at oiling points not accessible to oilers of rigid construction.

A further object is to provide an improved oiler of the character described in which the discharge of liquid therefrom is controlled by a deflecting resiliently yielding wall.

An added object is to provide a pressure oiler of the character described having a pressure-boosting piston operative therein.

Yet another object is to provide an improved oiler having its body and spout portions comprising separate elements which are threadedly engaged and are both formed of rubber, or the like, compositions.

The invention possesses other objects and features of advantage, some of which, with the foregoing, will be set forth or be apparent in the following description of a typical embodiment thereof, and in the accompanying drawings, in which,

Figure l is a plan view of an oiler embodying my invention.

Figure 2 is a partly sectional elevation of the oiler, the spout thereof being partly unscrewed from the body.

Figure 3 is a full sectional view of the oiler as applied for providing a lubricant therefrom at an oiling hole of a journal for a rotary or reciprocatory member.

The oiler 7 of my invention essentially comprises a generally dome-shaped container 8 comprising a body which removably mounts a spout member 9 at its top, the container and spout both being formed of resilient compositions of rubber, or similar materials which are resistant to oils and other liquids which might be supplied from the container 8, the material of the container being generally less hard and more flexible than the material of the spout. In practice it has been found that when the elements have the proportions and part thicknesses particularly illustrated, the material of the container 8 desirably has a hardness of about sixty as measured by a Shore durometer, while the material of the spout member 9 has a hardness of about eighty. Also, it is generally preferred that the compositions of the oiler elements be non-conductive of electricity to provide for a safe application of the oiler at electrical, or electrically charged mechanisms.

The container section 8 is formed with a diaphragm bottom 11 having a flat circular central portion 11 of rubber of uniform thickness and an outer portion 11" of progressively decreasing thickness normally sloping inwardly of the plane of the portion 11 to terminate at a peripheral bead 12 at the bottom of the section side 13. The arrangement is essentially such that an inward oildisplacing deflection of the diaphragm bottom 11 by reason of a given pressure of a users finger externally 2,7 32,736 Patented Jan. 31, 1956 against its central portion 11' may provide for an appreciably greater pressure and pumping action by the present diaphragm than would be possible by applying the same pressure against a usual oiler diaphragm of uniform thickness. To provide for a stable upright standing of the oiler, as in Figure 2, the diaphragm 11 is disposed inwardly of the support plane of the bead 12. The side 13 of the section 8 has a uniform thickness slightly exceeding the thickness of the central portion 11' of the diaphragm 11, and extends to a top opening 14 provided through a thickened upper portion 15 of the body and having a stepped bore which is smallest at its inner end and provides a fiat annular seat 16 at the juncture of its portions, the body portion 15 having an inner face 15' which is parallel to the support plane of the head 12 and the seat 16.

The tubular spout 9 of the present oiler has an elongated and tapered nozzle portion 17 terminating in a tip 17', an intermediate radially extending portion 18, and an externally threaded inner end portion 19 which is smaller than the portion 18 and is arranged for threaded engagement in the larger outer part of the bore of the opening 14. Since both the container and spout are of rubber, or the like, whereby their mutually engaged threads are more or less yielding, the complementary threads thereof are preferably double with at least the radial advance faces of the body threads and the opposed inner faces of the spout threads perpendicular to the spout axis for providing a solely axial reaction between the body and spout threads when the spout is secured on the body; the present threads are shown as square and snugly inter-fit radially thereof.

it will now be particularly noted that the threaded inner end portion 19 of the spout is preferably no shorter than the threaded receiving bore portion of the body whereby the inner nozzle end may forcibly and sealedly engage the seat 16 as the shoulder provided at the base of the nozzle threads engages the outer end face 15" of the body portion 15, the sealing pressure at the seat 16 preferably exceeding that at the body face 15" when the spout is fully mounted on the body. Experience has shown that the present specific threaded engagement of the spout and body is particularly eifective for providing the required direct sealed and frictionally locked engagement of the present rubber spout and body elements of resiliently yielding material which are mutually disconnectable to provide for any desired cleaning or replacement of either element with respect to the other as well as to facilitate a refilling of the oiler. In mounting a present spout member g on the container 8, the threads of the elements may be lubricated for facilitating their relative engagement as the spout is screwed into place, and the lubricant is squeezed from between the threads as the connection is completed to finally provide an effectively rubber-torubber frictional sealed engagement of the axially opposed thread faces in a compact and relatively undistorted assembly.

Both the bore 28 and the exterior of the spout 17 taper to the spout tip 17 whereby, with the spout formed of the described resiliently yielding material, the spout is progressively more flexible toward its tip 17 which is more tapered, or blunted, to complementarily engage such an oil-receiving opening as that of the counterbore inlet portion 21' of an oiling hole 21 for a rotating and/or reciprocating member 22 which is engaged in a bore 23 of a member 24 comprising part of a mechanism requiring pressure oiling. The nozzle portion 16 of the spout member 9 may be flexed as required for the application of its tip portion 17' to a counterbore 21, whereby the present oiler may be applied obliquely with respect to an oiling hole 21, the present oiler thus being usable at an oiling opening at which the application of a rigid oiling spout may be impossible. Also, since the tip 17' of a present spout 9 is of resiliently yielding material, its exterior is adapted to sealedly engage the counterbore 21' Y of a hole 21 for insuring a positive pressure discharge of liquid from the container to the hole.

. Means may be provided for boosting the already relatively high diaphragm-produced discharge pressure from the spout tip 'Ztlwhen the tip is sealedly engaged with an oil-receiving opening as the diaphragm is actuated. As particularly shown, the inner end portion of the spout bore 19 slidably receives a piston member 25 which is axially carried by the central diaphgram portion 11 for displacement therewith to provide an entirely hydraulic pressure ahead of it in the spout bore. In the present structure, the inner'end of the bore 20 is enlarged to provide a cylinder bore portion 2% in which the piston 25 is normally in such a loosely fitting relation thereto that oil may pass it to enter the spout bore ahead of it when the oiler is inverted for the discharge of oil therefrom.

The present pistonpump arrangement is such that a pumping deflection of the diaphragm, after the spout hasbeenfilled with oil ahead of the piston 25, will actuate the piston in the cylinder bore portion 20' to directly and forcibly eject the oil ahead of it from the spout tip 20, whereby to effect a boosted pressure delivery of the oil to and through an oiling hole having the spout tip sealedly engaged with its inlet end. As shown, the working end 25 of the piston 25 is of resiliently yielding material and is cupped for its radial expansion by the back-pressure of the discharging oil toward or to the cylinder bore 19 during a working stroke of the piston. It will be understood that the piston-induced boosted discharge pressure for the present oiler varies directly with the speed of working movement of the piston, and that the transverse resiliency of the container bottom is arranged to withdraw the released piston for successive working strokes thereof.

As particularly shown, the piston 25 comprises a reduced cylindrical portion of a member 26 formed of a rubber composition or the like and having its qualities of hardness and resiliency substantially those of the spout material. The rear end of the member 26 is provided with an axial socket which complementarily receives an axially extending projection or integral button portion 27 of the diaphragm 11. The member 26 may be permanently fixed to the diaphragm or be removably mounted thereon in compressively gripping engagement therewith for its optional use with the oiler structure; any mounting or dismounting of the member 26 may be effected through the nozzle-receiving container opening while the spout is dismounted.

While I have for descriptive convenience herein generally referred to rubber compositions as being used in providing the elements of the present oiler, it will be understood that the material used may be any flexible rubber substitute, such as neoprene, the material used preferably being non-conductive of electricity, and accordingly non-metallic, to insure a safe application of the oiler at or adjacent electrical mechanisms, while using the flexibility of the structure as means of applying the spout tip in places inaccessible to the tips of rigid oiler spouts. It will also be evident that the proportions of the disclosed structure are variable within the scope of my invention, and that said structure may be used for applying liquids other than lubricant oils on surfaces or in receiving holes, such other liquids including coolants and lubricants for cutting tools.

From the foregoing description taken in connection with the accompanying drawings, the advantages of the present liquid applicator will be readily understood by those skilled in the art to which the invention appertains. While I have described the principle of operation, together with a structure which I now consider to be the preferred embodiment thereof, I desire to have it understood that the showing is primarily illustrative, and that such changes and developments may be made, when de- 4 sired, as fall within the scope of the following claims.

Iclaim:

1. In an oiler having container and spout portions, a circular diaphragm comprising a part of the container wall and coaxial with the intake of the spout portion, and a piston member fixed to the diaphragm centrally and axially thereof and directly operative in thespout bore to create a solely hydraulic discharge pressure in the bore by and upon an inward displacement of the diaphragm in a working stroke thereof.

2. A structure in accordance with claim 1 having the piston member freely fitting the spout bore normally and having its working end arranged for expansion in the spout bore by pressure produced by reason of a working stroke thereof wherebyit is directly operative as a liquid intake valve with respect to the nozzle during its return strokes.

3. An all-rubber oiler comprising, a lubricant container of resiliently flexible rubber material having a diaphragm side and provided with a filler opening opposite said side, a discharge spout member removably and sealedly and directly engaged in said opening in extending relation to the container and being formed of resiliently flexible rubber material, and a pumping piston member of rubber fixedly carried solely by the diaphragm centrally thereof and directly operative in the bore of said spout to create a solely hydraulic discharge pressure of the lubricant in the spout bore by and upon an inward displacement of the diaphragm in a working stroke thereof and to permit the flow of lubricant from the container outwardly there along by and upon a return stroke of the diaphragm.

4. A structure in accordance with claim 3 wherein the diaphragm side of the container is circular and has a peripheral portion uniformly decreasing in thicknessinwardly to a circular central portion which mounts the pumping piston axially thereof.

5. In an oiler having a container portion and a spout portion, a resilient rubber diaphragm comprising a part of the container wall and coaxial with the intake of the spout portion, and a piston member fixed to the diaphragm centrally and axially thereof and directly operative in the spout bore to create a solely hydraulic discharge pressure in the bore by and upon an inward displacement of the diaphragm in a working stroke thereof, the diaphragm having a peripheral portion uniformly decreasing in thickness inwardly to a central portion which mounts the piston.

6. In an oiler, a container portion having a diaphragm side, a spout portion providing a discharge bore from the container space and having its outer and major part tapering smoothly to a tapered and rounded discharge tip portion of resilient flexible rubber arranged for its sealed pressure engagement with and within the rim of an oil-receiving opening during the delivery of oil thereinto from the spout bore, and a piston controlled by the diaphragm directly operative in the spout bore to create a solely hydraulic discharge pressure for the oil in the bore by and upon a working displacement of the diaphragm.

7. In an oiler, a container member provided with a charging and discharging opening having a threaded part extending inwardly from a fiat annular seat at the outer container face and terminating at an interior annular part providing an outwardly facing flat seat, a tubular spout member of resiliently flexible material having a rounded discharge tip arranged for its sealed pressure engagement with the rim of an oil-receiving opening during a working actuation of the oiler and providing a longitudinal discharge bore tapering smoothly to said tip, said spout member also having a threaded inner end portion which is arranged for mounted engagement in said threaded portion of the container opening and is no shorter than said opening portion and extends outwardly to a radial shoulder of the spout member providing an inwardly facing fiat seat, whereby a full threaded engagement of the inner end portion of the nozzle member in the threaded portion of the container opening is operative to compressedly engage said nozzle portion between the nozzle shoulder and the inner opening seat, and a piston carried by the container and directly operative in the inner spout bore portion to create a relatively high and solely hydraulic discharge pressure for the liquid in the bore.

8. In an oiler, a container member provided with a charging and discharging opening having a threaded part extending inwardly from a flat annular seat at the outer container face and terminating at an interior annular part providing an outwardly facing fiat seat, a tubular discharge spout member of resiliently flexible material having a threaded inner end portion which is arranged for engagement in said threaded portion of the container opening and is no shorter than the portion and extends outwardly to a radial shoulder providing an inwardly facing fiat seat whereby a full threaded engagement of the inner end portion of the spout member in the threaded portion of the container opening is operative to engage the inner end of the spout member with the said seat at the container opening and to simultaneously engage the said shoulder of the spout member with said exterior seat of the container.

9. A structure in accordance with claim 8 in which the material of the portion of the container member which provides said opening is resiliently flexible and has a different durometer hardness than the resiliently flexible material of the portion of the spout member which is engageable with it.

References Cited in the file of this patent UNITED STATES PATENTS 151,775 Hall June 9, 1874 410,938 Shaw Sept. 10, 1889 1,075,691 Burchett Oct. 14, 1913 1,704,573 Matthews Mar. 5, 1929 2,073,303 Holder Mar. 9, 1937 2,207,176 Phillips July 9, 1940 2,219,604 Trotter Oct. 29, 1940 2,435,527 Arpin Feb. 3, 1948 2,474,442 Spender June 28, 1949 2,482,384 Tullgren Sept. 20, 1949 

